Date: Mon, 26 Apr 2010 20:12:09 +0200 From: Pawel Jakub Dawidek <pjd@FreeBSD.org> To: "M. Warner Losh" <imp@bsdimp.com> Cc: mav@FreeBSD.org, freebsd-current@FreeBSD.org, freebsd-geom@FreeBSD.org Subject: Re: Switchover to CAM ATA? Message-ID: <20100426181209.GB3012@garage.freebsd.pl> In-Reply-To: <20100426.103327.319083499807534535.imp@bsdimp.com> References: <4BD06BD9.6030401@FreeBSD.org> <20100426.103327.319083499807534535.imp@bsdimp.com>
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--mxv5cy4qt+RJ9ypb Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Apr 26, 2010 at 10:33:27AM -0600, M. Warner Losh wrote: > I've read most of this thread. I think this is cool technology. > However, before we move forward with this, we need to have a plan for > the various issues that have come up. The plan needs to be specific, > have owners for key items, warnings about ownerless =3D=3D obsoleted, and > target dates. >=20 > I think this is one of the cases where we should record the plan of > record on a wiki. It worked well for other times we've had big, > disruptive changes. >=20 > My opinion for the path forward: > (1) Send a big heads up about the future of ataraid(5). It will be > shot in the head soon, to be replaced be a bunch of geom classes > for each different container format. At least that seems to be > the rough consensus I've seen so far. We need worker bees to do > many of these classes, although much can be mined from the ataraid > code today. This shouldn't be a bunch of GEOM classes. This should one class which recognize multiple formats, just like the LABEL class. I don't think it is feasible to reuse gmirror for that, it wasn't designed in something like this in mind. > (2) Send another big heads up strongly recommending people go to > glabel based fstabs. Maybe the right option here is to provide a > simple script walk people through the conversion. This will > render the carnage of ad -> ada (or da) a mostly non-event, and > also protect people from 'oops' of rebooting with that thumb drive > in the system. > (3) Create a wiki to record all the new geom classes needed. Find > people to own each one, or note it is unowned, and support will be > dropped if no owner can be found. > (4) sysinstall should default to creating label systems, if it doesn't > already. > (5) Issues with glabel and ataraid(5) need an owner, and need to be > resolved, since the device names here are likely to change. What are the issues? --=20 Pawel Jakub Dawidek http://www.wheelsystems.com pjd@FreeBSD.org http://www.FreeBSD.org FreeBSD committer Am I Evil? Yes, I Am! --mxv5cy4qt+RJ9ypb Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.14 (FreeBSD) iEYEARECAAYFAkvV13kACgkQForvXbEpPzT6MgCg4JrUw+ONC0VBCXtKBYrfQJXI HV4An28X0VJICNPg3RFHT5+o7MExBaTx =bI6x -----END PGP SIGNATURE----- --mxv5cy4qt+RJ9ypb--
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